43193274689 has 2 divisors, whose sum is σ = 43193274690. Its totient is φ = 43193274688.

The previous prime is 43193274653. The next prime is 43193274701. The reversal of 43193274689 is 98647239134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 21788121664 + 21405153025 = 147608^2 + 146305^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43193274689 is a prime.

It is not a weakly prime, because it can be changed into another prime (43193273689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21596637344 + 21596637345.

It is an arithmetic number, because the mean of its divisors is an integer number (21596637345).

Almost surely, 2^43193274689 is an apocalyptic number.

It is an amenable number.

43193274689 is a deficient number, since it is larger than the sum of its proper divisors (1).

43193274689 is an equidigital number, since it uses as much as digits as its factorization.

43193274689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7838208, while the sum is 56.

The spelling of 43193274689 in words is "forty-three billion, one hundred ninety-three million, two hundred seventy-four thousand, six hundred eighty-nine".